LG Electionics Inc. (Seoul, KR)

An embodiment of the present disclosure provides a method for performing sidelink (SL) communication that is based on a physical sidelink control channel (PSCCH) by a primary apparatus. This could include transmitting an initial sidelink control message to a second device via PSCCH, and then sending another sidelink message to the second apparatus via physical sidelink shared channels (PSSCH) which are connected to the PSCCH. The reserved bit in the first sidelink information is reserved for use in the future.

Field of the Disclosure

This information is related to wireless communication networks.

Similar Art

Sidelink (SL) communication is a communication scheme in which a direct link is established between User Equipments (UEs) and the UEs exchange data and voice directly with each other without intervention of an evolved Node B (eNB). SLcommunication is under consideration as a possible solution to the cost of an eNB caused by rapidly increasing data traffic.

Vehicle-to-everything (V2X) refers to a communication technology through which a vehicle exchanges information with another vehicle, a pedestrian, an object having an infrastructure (or infra) established therein, and so on. The V2X may bedivided into 4 types, such as vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-network (V2N), and vehicle-to-pedestrian (V2P). A Uu interface, or a PC5 interface could be used to communicate with V2X.

As a wider variety of devices require greater capacity for communication mobile broadband is growing more significant than Radio Access Technology (RAT). Discussions are ongoing on the advancement of technologies and equipment (UE) which are more dependent on latency and reliability. A next-generation radio access system, which is based on enhanced mobile broadband communication (MTC) and huge Machine Type Communication, Ultra-Reliable and Low Latency Communications, (URLLC), etc. It could be referred to as new radio technology (RAT) and new radio (NR). Herein, the NR may also support vehicle-to-everything (V2X) communication.

FIG. 1 is a diagram the description of V2X communication based upon the concept of NR, in contrast to V2X communications based on RAT prior to NR. The design of FIG. 1 is a combination of different embodiments of the present disclosure.

Regarding V2X communication it is a method of providing a safety service, that is based on a V2X signal such as BSM (Basic Safety Message), CAM(Cooperative Awareness Message), and DENM (Decentralized Environmental Notification Message) is the subject of the discussion on the RAT that was used before the NR. V2X messages may contain dynamic, position and attributes information. For instance, a UE can send out a regular message type CAM, or an event triggered message type DENM to another UE.

For instance the CAM might contain dynamic information about the vehicle like speed and direction, static data of the vehicle like size, and the basic information, such as the exterior illumination status, route information and the like.For example the UE can broadcast the CAM, and latency of the CAM may be less than 100 ms. In other words, the UE could create the DENM and send it to another UE in an unplanned situation such as a vehicle breakdown accident, breakdown, or the like. For instance all vehicles within the range of transmission for the UE can receive the CAM or the DENM. In this case the DENM might have a higher priority than the CAM.

In the field of NR, there are many V2X scenarios that can be used to communicate via V2X. For instance, various V2X scenarios may include vehicle platooning, advanced driver extended sensors, remote driving or the like.

For example, based on platooning in the vehicle that vehicles can move by dynamically forming groups. The group of vehicles could receive periodic information from the leader vehicle so that they can perform platooning operations. For example, the vehicles that belong to the group could alter or extend the time between vehicles based on the regular data.

For instance, based on the advanced driving, the vehicle can be fully or partially automated. Every vehicle is able to adjust its trajectories and maneuvers according to the data of the nearby sensor or proximity logic entity. The vehicles could also share driving intentions with nearby vehicles,

Based on, for instance, the sensors extended, the raw data, processed data or live video data gathered from the sensors on the ground could be transferred between a vehicle or logical entity pedestrians’ UE and/or a V2X service server. For instance, a car may recognize an area that is more favorable than one where self sensors are used.

For instance, based upon the remote driving, for someone who is unable to drive or operate a remote vehicle in a dangerous situation, a remote driver or a V2X app could operate or manage the remote vehicle. Cloud computing-based driver, for instance, can be utilized to manage or control the remote vehicle if the route is predictable, such as public transport. Additionally, for instance the access to cloud-based back-end services may be considered for the remote driving.

A method of defining the service requirements for various V2X scenarios such as vehicle platooning, advanced driving, extended sensors, remote driving, and so on is presented in the V2X communications that are based on NR.

The present invention provides a method for communication between apparatuses (or terminals) that is based on V2X technology and the devices (or terminals) using the method.

The disclosure also offers a method for transmitting and receiving information about sidelink control between two devices that utilize V2X communication in a wireless communication system, and the apparatus performing the method.

A communication system may require different types of sidelink information depending on the type of transmission (e.g. broadcast or groupcast). A traffic feature, and/or broadcast type could also be required. These different sidelink control information may be communicated using various sidelink information formats. Information about sidelinks can be identified or determined using different formats of sidelink information. To decode sidelinkcontrol information an equipment or terminal could require blind decoding it several times. This is because each sidelink information format has various sizes. In this way, excessive latency and/or powerconsumption may occur. Thus, to minimize the occurrence of unnecessary latency or power consumption associated with sidelink control, the information format needs to be properly defined. In this regard the disclosed disclosure allows for a method of effectively defining (or determining) a format of sidelink control information required for each specific setting (e.g. the traffic feature, etc.) Consider power consumption, latency or other characteristics of the apparatus (orterminal), when SL communication is carried out in the V2X network.

The present disclosure also provides a method and apparatus for effectively defining first sidelink control information including information for a resource of second sidelink control information while performing sidelink control informationtransmission in 2 steps through the first sidelink control information and the second sidelink control information.

The method described is in the context of the embodiment described in this disclosure for sidelink (SL), communication using the physical sidelink control channel. The method includes transmitting a firstsidelink control signal to a second device via PSCCH and transmitting second sidelink control data to the second device via a physical sidelink shared channel (PSSCH) connected to the PSCCH. The first information on sidelinks contains at minimum one reserved bit for use.

Another embodiment of the disclosure provides a first device to enable SL communication that is based on a PSCCH. The first apparatus includes at least one memory for storing instructions, at least one transceiver, and at least one processor that connects the at least one memory with at most one transceiver. The processor is able to control at least one transceiver to transmit first sidelink information to another device using PSCCH, and the other transceiver through a PSSCH to send second sidelink information to the other device. At least one reserved bit can be contained in the first information regarding the sidelink.

A different embodiment of the disclosure comprises an apparatus to control a primary apparatus. The apparatus comprises at least one processor and at most one computer memory that is coupled to the processor in an executable way and stores instructions. The at least one processor can execute the instructions, such that the first terminal is able to transmit first sidelink control information to a second apparatus using an PSCCH and then transmit secondsidelink control information to the second apparatus through the PSSCH that is connected to the PSCCH. A minimum of one reserved part is present in the first sidelink control data.

A non-transitory computer-readable storage medium which stores instructions is an additional embodiment of the present disclosure. The instructions may be performed by at least one processor that transmits the first sidelink control information to a second machine via the PSCCH and then transmit, by the first apparatus, sidelink control information to the second device through a PSSCH related to the PSCCH. The first information about sidelinks includes at least one reserved bitreserved for use.

According to another embodiment of the present disclosure, there is provided a method of using SL communication that is based on the PSCCH using a second device. The method involves receiving first sidelink control information from the first apparatus, which is based upon a PSCCH and then receiving the second sidelink control information from the first apparatus, which is based on the PSSCH connected to the PSCCH. The initial sidelink control information comprises at least one reserved bit to be used.

According to another embodiment of the present disclosure there is provided another apparatus that performs SL communication based on PSCCH. The second apparatus comprises at most one memory that stores instructions, at minimum one transceiver, and at least one processor that connects at least one memory to at least one transceiver. The at least one processor is designed to allow the at least one transceiver to receive first sidelink control information from a first apparatus, that is based on a PSCCH and also regulate the at least one transceiver to get additional information about sidelinks from the first apparatus, based on a PSSCH related to the PSCCH. A minimum of one reserved bit is included in the initial sidelink control information.

As per the disclosure described hereinafter the terminal (or device) can effectively perform SL communication.

According to the present disclosure V2X communication between devices (or terminals) can be efficiently performed.

The disclosure in this document reveals that wireless communication systems built on V2X communications can send and receive sidelink control information efficiently.

In accordance with the present disclosure the present disclosure, in the event that SL communication is carried out within a V2X environment the format of control information required in each environment (e.g. the transmission type or a traffic feature etc.).) Effectively defining (or the definition of) the characteristics of an apparatus (or terminal) can be done by taking into account the power consumption, latency or other parameters.

The disclosure disclosed hereinafter reveals that the initial sidelink information, including information about a second information resource, can be effectively identified when sidelink information transmission takes place in two steps, namely the sidelink information and the first information about the sidelink.

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